用碳水化合物介导的石油化学品的净化
James M Holcroft1, Karel J Hartlieb1, Peyman Z Moghadam
1†Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208-3113, United States.
Journal of the American Chemical Society
|March 26, 2015
概括
绿色金属有机框架 (CD-MOFs) 显示出高的形状选择性,用于分离芳,如BTEX混合物. 这些CD-MOF为工业化工原料分离提供了一种高效,环保的替代方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 绿色化学 绿色化学
背景情况:
- 金属有机框架 (MOF) 对于节能工业化学分离至关重要.
- 开发可持续和选择性的分离材料是一个持续的挑战.
- 基于循环烯的MOF (CD-MOF) 为新型分离应用提供了潜力.
研究的目的:
- 为了研究CD-MOFs的形状选择性,用于芳香碳化合物分离.
- 评估CD-MOF作为现有分离方法的绿色替代品.
- 了解观察到的形状选择性背后的分子机制.
主要方法:
- 合成CD-MOFs使用马环氧和金属酸盐.
- 吸附异温和液相色谱测量.
- 大法典蒙特卡洛模拟和静态蒸汽吸附研究.
主要成果:
- CD-MOF 具有很高的形状选择性,用于分离类化合物,包括烯,乙烯和烯.
- 观察到一个不同的保留顺序 (ortho- > meta- > para-xylene).
- 实现了对工业相关的BTEX混合物的有效分离.
- 对于乙醇和烯异构体以及烯净化,区域选择性得到证实.
结论:
- CD-MOFs提供了一个高效,可靠和绿色的平台,用于分离芳.
- 观察到的形状选择性源于MOF通道内的分子定向和包装.
- 这些来自可再生资源的CD-MOF为化学分离提供了可持续的解决方案.
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